FILE - In this Jan. 24, 2019, file photo, the Supreme Court is seen at sunset in Washington. Vast changes in America and technology have dramatically altered how the census is conducted. But the accuracy of the once-a-decade population count is at the heart of the Supreme Court case over the Trump administration’s effort to add a citizenship question to the 2020 census. The justices hear arguments in the case Tuesday, April 23. (AP Photo/J. Scott Applewhite, File)